I'm not babying him, I'm just calling it like I see it. This team is garbage on the offensive side of the ball before he came in. Nothing really changed. The same people who came to collect checks were the same people quitting on routes and looking for the Jeff Fisher Holiday Inn. Jared Goff came from an even worse situation in that
his Cal team was worse than this Rams team and he overcame it @Dxmissile (it's one of the reason's outside of football that I really hold Goff in high regard). Sam Bradford didn't have that kind of adversity coming out of Oklahoma. (For whom I have lost all respect for as a school and as a football program).
Any competent coach(who isn't the laughingstock of the NFL) would have realized that he should have been starting from day 1 and adjusted his system to be more Rookie QB friendly system. Jeff Fisher is a horrible coach, who implented a horrible supporting staff.
And another thing, whenever the offense was clicking, the defense fell apart. When the defense fell apart the offense played good. Who's to be blamed for that.
Edit: Also I don't like that you compare Case Keenum to Jared Goff. One is a rookie coming from a different system and no first team reps in the off season, to a guy who was almost as bad as Carson Wentz (post week 3-15).